Bulletin of the American Physical Society
52nd Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics
Volume 66, Number 6
Monday–Friday, May 31–June 4 2021; Virtual; Time Zone: Central Daylight Time, USA
Session U06: Spectroscopy, Lifetimes, Oscillator Strengths
2:00 PM–3:48 PM,
Thursday, June 3, 2021
Chair: Charles Sukenik, Old Dominion
Abstract: U06.00002 : Hyperfine structure of molecular hydrogen *
2:12 PM–2:24 PM
Live
Presenter:
Hubert Jozwiak
(Nicolaus Copernicus University in Toruń, Poland)
Authors:
Hubert Jozwiak
(Nicolaus Copernicus University in Toruń, Poland)
Hubert Cybulski
(Kazimierz Wielki University, Bydgoszcz, Poland)
Piotr Wcisło
(Nicolaus Copernicus University in Toruń, Poland)
Here, we analyze the leading hyperfine interactions in the six molecular isotopologues of hydrogen: H2, HD, D2, HT, DT and T2. We present the calculated coupling constants: spin-rotation, spin-spin dipole and, in the case of deuterium-bearing species, the electric quadrupole coupling constants for all bound states in the ground electronic state of the six isotopologues. We provide a list of positions and intensities of 1 503 057 hyperfine components of 86 015 rovibrational electric dipole and quadrupole transitions and we discuss the influence of hyperfine splittings on the Doppler-limited spectra.
*The research is financed from the budgetary funds on science projected for 2019–2023 as a research project under the ”Diamentowy Grant” program.P.W. is supported by the National Science Centre in Poland, Project no. 2018/31/B/ST2/00720. Calculations have been carried out using resources provided by Wroclaw Centre for Networking and Supercomputing, grant no. 294.
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